Renewable energy resources
3 marks · NormalExplain why hydroelectric power is considered a renewable energy resource but building hydroelectric dams can have negative environmental impacts.
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Also accept: Stating dam construction changes habitats or destroys wildlife.; Spoils scenery or leads to construction issues.
Common mistakes: Only discussing the environmental impact, not explaining renewability.
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Marking points
M1 · 1 mark · States hydroelectric is renewable because water is continually replaced by the water cycle.
M2 · 1 mark · States that hydroelectric power does not use up the water resource.
I1 · 1 mark · Explains how building dams/reservoirs can damage habitats, spoil landscapes, or change wildlife areas.
Worked solution
Hydroelectric power is renewable because the water cycle continually replaces the water in reservoirs; the resource does not run out. However, building hydroelectric dams creates reservoirs that flood large areas, spoiling natural landscapes and destroying or altering habitats for wildlife.